"Robert was an amazing sculptor who forever shaped the presence of sculpture art throughout California and the world. His work was truly influential and he will forever remain an icon in this state," Governor Arnold Schwarzenegger said in a statement.

Graham's sculptures are featured at the Los Angeles Memorial Coliseum and the Franklin Delano Roosevelt Memorial in Washington, DC. He also created the 25-ton bronze doors on the Cathedral of Our Lady of the Angels in L.A.